Filament-mounting.



E. S. GARDNER. FILAMBNT MOUNTING.

APPLICATION FILED 11017.17, 1910.

1,001,630, Patented Aug.29, 1911.

Witnesses: Inventor:

@/ Edgar S. Gardner,

His fittorneg tilllt l ittili l l fifl'itihllf t'l. ()FFICE.

EDGAR S. GAFDN'H'R. ('JTJ ACF'UACKLNONGH, NEW/I JERSEY. ASSIGNOR TO GENERAM .E L I it .lIEtItG GOI L'PAIFY. A CORPORATION OF NEW YORK.

EILAJt'IEN'T-I IO U NTING.

oo i .eso.

Application fitett l't'ovenzber 17" 1910.

' b all lo/torn it may concern:

lie itknown that t. ilnou: h. tiinnxicn, a citizen of the lt nited Htaes. residing at Aetplaclntnonek county ot" iarnir. State of New Jersey, have invented eertain new and useful -improvements in Filamentiilounting, of which the following is a specification. Q

My invention relates to lilameut n|ounting and its object is an improved mounting suitable for filaments and other eonductors which possesses various desirable characteristics.

Among the advantages which may be secured in a mounting constructed accordii'ig to my invention are: First, the reduction to a minimum of the liability of the eonducttn' to breakage, so that the apparatus will be especially suited tor service in which it is subject to vibration and shocks; second, the easy application otthe conductor to its supporting system; thi d. the mounting of a great length of conductor in a small space, and that without disk of short-eircuiting; fourth, an arrangement of lamp filaments which Will give a good distribution of illumination.

Other advantages will hereinafter appear.

My invention is very useful in incandescent'filament electric lamps. especially when the lamps are used under such severe conditions as obtain, in car-lighting service. I have hereinafter particularly described a construction embodying it that is well suited for this purpose andrior such conditions of use, referring to the conductor as a filament and to the apparatus in which it is employed as a lamp; but I desire it to be understood that my invention canbe otherwise carried out and applied Within the scope of'the appended claims. In 'incandescent lamps my invention may be employed with filaments of tantalum, tungsten, or any other material.

The accompanying drawing gives a perspective view.of one embodiment of the invention. the same being shown as broken away from the globe and removed therefrom for clearness of illustration.

The filament system or mount here shown comprises a plurality of filament-carrying elements or arms of iron, nickel. copper, molybdenum or other suitable material (due regard being of .e'ourse had in its selection to the material of the filament.) having suit- Specification of Letters Patent.

Patented Aug. 29, 1911..

Serial No. 592.843.

1 able lilameat-engaging poriims and prot."t'tlI]I lrom suppm'ting means consisting of a member or standard S and a suitt'tble member or base I) to wit; said member or standard S lf-i attael'ied. For convenience sake. the members S and D may be regard ed as constituting a single supporting member M. The member or base D may con; reuiently be a fixed part oi the general lamp strueture.----and, in particular, the ordinary glass stem through which the current-slur ply conductors Z, Z, are introdiieed into the lamp. As shown, the arms or carriers (1, and a form suitably separated groups or sets A and C, respectively,and the additional or supplemental carriers 7) are shown as of ditterent lengths from the carriers a and and as arranged intermediate the car riers a and e and forming an intermediate group or set B. \Vith the exception of the arms or carriers (I and a, of the group 1 formed by portions of the leading-in wires 1. Z extending within the lamp globe, the carrying elements are fused into glass enlargements or disks on the member S. As intimated above, the filament-engaging portions of the various carriers do not preferably project equally from the standard S, those of the carriers of the outer groups A and C-.-whieh may for convenituice be termed the lowermost and uppermost groups or sets, respectively. preferably projecting farther than the supplemental carriers 1), as shown in the drawing. The hooks or eyes forming the engaging portions of alternate sup lemental carriers lie in planes a short distance apart and face away from one another (so that the alternate supplemental carriers might be regarded as eonstitutin; different sets) but it. will be understood that the engaging portions of the supplemental carriers may, if desired, all lie in the same plane, or thata plurality of entirely rier b thence downward tea -carrier, a of the group A, thence upward to a OELIIIGI' 0 of the group C, thence downward to an upward facing supplemental carrier 6 thence upward to a carrier 0 of the group C,thencedownward to a carrier a, of the group A, thence upward to a downward facing supplemental carrier 6,, etc.,passing finally downward from the carrier 0 of the group C to the carrier a, of the group A formed by the right-hand current lead and being suitably connected thereto. It will. be understood that the filament-engaging portions of the various arms or carriers'may conveniently have the form of open hooks while the filament is being applied to the supporting system and that'such hooks may afterward be closed to form eyes.

The filament system, it will be observed, comprises a plurality of filament sections of two sorts: First, sections f (shown as approximately vertical) extending between carriers of the groups A and C; and second, intermediate sections f, f (which, as shown, are more or less inclined and some what shorter than the vertical sections) extending between carriers ofthe groups A and B and the supplemental carriers 0 and in series between neighboring sections of the first sort as regards the passage of current. The intermediate sections f, f, or f, f lying between adjacent sections of the first sort terminate at carriers of the same one of the grmips A and B, and the intermediate sections f, f and f, f on opposite sides of a. section of the first sort terminate at carriers of different groups. It will be observed that in this arrangement neighboring sections are everywhere well separated and contiguous sections diverge from one another a substantial amount at their junction, so

that there is practically no risk of short-circuiting. I Moreover, the change in direction of the filament at the carrier between contiguous sections is in every case very considerable, so that even though the filament be as shown in the drawing-continuous at this point, such sections are almost entirely independent of each other as regards behavior under shock or vibration and there is little tendency for two sections to vibrate or move in unison. Th1s 1s especially true of contiguous intermediate sections as compared with what. would be the case if the filament, for example, extended from the lowermost carrier (1 to the intermediate carrier 6 then to the uppermost carrier 0 and have very much like a single long length and respond like such a length to every influence. tending to set them in motion, so that such an arrangement would not be so differing in length from, the others,

good as the one shown v in the drawing. There would, in fact, be greater slackness of the filament owing to the greater allowance that must be made for shrinkage in the long length, greater vibration, greater liability of the filament to breakage when the condi-i tions of service are at all severe, and a corresponding shorter avcra life for the lamp! The mount would, furthermore, be harder to construct, and the application of the filament to it would present greater difiiculties. 1

in the arrangement shown, on the other hand, the strains placed upon the filament in consequence of vibration are reduced to a minimum and it is supported in the most efficient manner. Furthermore, the shrinkage in any one section is compantively small and there is little opportunity for this shrinkage to result in dragging the filament over its supports.

'VVhat I claim as new and desire to so 11" by Letters Patent of the United States, is,-

1. A filament mount comprising groups of filament carriers suitably spaced apart, supplemental carriers having their filamen v engaging portions arranged intermediate said groups, and a plurality of filament sections mounted on said carriers, adjacent filament sections that extend between carriers of the said groups having in series between them sections that terminate at supplemental carriers and at carriers of the same one of said groups.

2. A filament mount comprising groups of filament carriers-suitably spaced apart, supplemental carriers having their filament engaging portions arranged intermediate. said groups,-and a plurality of filament sections mounted on" said carriers, adjacentfilament sections that'ext'end between carriers of said groups'liaving in series between them intermediate sectio'ns'. that terminate at intermediate carriers and at carriers of the same one of said groups and 'intermediate sections lying on opposite sides of a section that extends between carriers of the said groups terminating at. carriers of different groups.

3. The combination with outer sets of;- carrying elements pro eet1ng from a suitable supporting member and suit-ably spaced apart of an intermediate set of' such elements projecting from said member and a conductor arrangedupon the elements of i said sets in a plurality of sections, some of 4;. A filament mount comprising outer sets of carrying elements and an intermediate set. the elements of said intermedi'ate' set and a.

filament arranged thereon in a plurality of sections, the sections which extend between an element of one outer set and an element of the other being connected by sections which extend between elements of the intermediate set and elements of the same outer set, and the connection of adjacent sections which terminate at elements of the outer sets as aforesaid being effected at opposite ends alternately. p

5. A filament mount comprising a member having suitably separated groups of filament-carrying arms and arms intermediate said groups radiating therefrom, the intermediate arms being shorter than those of said groups, and aplurality of filament sec tions arranged on the arms, sections which join one another at an intermediate arm joining other sections at arms of the same one of the groups aforesaid.

(J. A filament mount comprising a filament arranged in a plurality of sections of different lengths supported by suitable carriers radiating from a central member, adjacent sections of equal length being short and making an acute angle with one another.

7. A filament mount comprisin suitably separated groups of carrying elements and intermediate carrying elements, and a plurality of filament sections arranged on such elements, adjacent sections which terminate at an intermediate element extending therefrom to elements of the same one of the aforesaid groups, and sections terminating at adjacent intermediate elements extending to elements of di'lferent groups.

8. A filament mount comprising outer and intermediate sets of carriers suitably spaced apart and a filament arranged thereon-in a plurality of sections, sections which join one another at one of two adjacent intermediate carriers terminating at carriers of oneouter set and sections which join one another at the other of the said intermediate carriers terminating at carriers of the other outer set.

was

9. A filanuaitmount comprising two suitably separated sets of filament carriers pro jecting from a suitable supporting nu-mber and shorter suppleuumlal carriers, and a plurality of filament sections mounted on said carriers, certain filament sectionswe tending between elements of the sets aforesaid, and intermediate sections in series be tween adjacent sections of this character extending from one of the shorter carriers to carriers of the same one of the sets aforesaid. v

10. A filament mount comprising twosuit- -ably separated sets'ol' filament carriers radiating from a suitable supporting member and additional filament carriers shorter than those of the sets aforesaid, and a filament mounted on said carriers comprising a plurality of sections extending between carriers of said sets and also sect-ions extending be tween said short carriers aml carriers of said sets, sections which terminate at the same short carrier extending to carriers of the same one of the sets aforesaid, and sections of this description that lie on opposite sides of a section which terminates at carriers of the said sets aforesaid extending to carriers of different ones of the sets aforesaid.

ll. The combination with two suitably separated groups of carriers projecting from suitable supporting means and supplemental carriers projecting therefrom a less distance than those of said groups of a plurality of conductor sections mounted on said carriers, sections which terminate at one of said supplemental carriers extending therefrom to carriers belonging to the same one of said groups.

In witness whereof, l have hereunto set my hand this 14th day of November, 1910.

S. N. Wurrnumn, J. H. ELKILNS. 

